<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>09_盒子的边框_border</title>
    <style>
        div {
            width: 400px;
            height: 400px;
            background-color: skyblue;

            border-left-width: 10px;
            border-right-width: 20px;
            border-top-width: 30px;
            border-bottom-width: 40px;

            border-left-color: red;
            border-right-color: orange;
            border-top-color: green;
            border-bottom-color: tomato;

            border-left-style: solid;
            border-right-style: dashed;
            border-top-style: double;
            border-bottom-style: dotted;

            /* border-color: red; */
            /* border-width: 80px; */
            /* border-style: dashed; */

            border-left: 50px solid purple;
            border-right: 60px dashed orange;
            border-top: 70px double green;
            border-bottom: 80px dotted gray;

            /* border: 10px solid red; */
        }
    </style>
</head>
<body>
    <div>你好啊</div>
</body>
</html>